question_answer

Highest common factor of 42 and 162 is______.

A)  6                                

B)  4                    

C)  12                   

D)         2                    

Correct Answer: A

Solution :

2	42
3	21
7	7
	1

	162
3	81
3	27
3	9
3	3
	1

                        H.C.F. = 2  3 =6